d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Aadd Raspberry Pi firmware messages to manage GPIOs

Browse Source 
Some GPIOs are managed by an external IO expaandder through the firmware.
Add the message details for these.

Sponsored by:	Innovate UK
This commit is contained in:
Andrew Turner 2020-07-28 11:13:37 +00:00
parent 8f11c99715
commit d9501cbab5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363645
1 changed files with 55 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
sys/arm/broadcom/bcm2835/bcm2835_firmware.h
View File

@ -142,6 +142,61 @@ union msg_set_turbo_body {
} resp;
};
#define BCM2835_FIRMWARE_TAG_GET_GPIO_STATE 0x00030041
#define BCM2835_FIRMWARE_TAG_SET_GPIO_STATE 0x00038041
#define BCM2835_FIRMWARE_TAG_GET_GPIO_CONFIG 0x00030043
#define BCM2835_FIRMWARE_TAG_SET_GPIO_CONFIG 0x00038043
#define BCM2835_FIRMWARE_GPIO_IN 0
#define BCM2835_FIRMWARE_GPIO_OUT 1
union msg_get_gpio_state {
struct {
uint32_t gpio;
} req;
struct {
uint32_t gpio;
uint32_t state;
} resp;
};
union msg_set_gpio_state {
struct {
uint32_t gpio;
uint32_t state;
} req;
struct {
uint32_t gpio;
} resp;
};
union msg_get_gpio_config {
struct {
uint32_t gpio;
} req;
struct {
uint32_t gpio;
uint32_t dir;
uint32_t pol;
uint32_t term_en;
uint32_t term_pull_up;
} resp;
};
union msg_set_gpio_config {
struct {
uint32_t gpio;
uint32_t dir;
uint32_t pol;
uint32_t term_en;
uint32_t term_pull_up;
uint32_t state;
} req;
struct {
uint32_t gpio;
} resp;
};
int bcm2835_firmware_property(device_t, uint32_t, void *, size_t);
#endif